<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8"/>
    <meta
            name="viewport"
            content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"
    />
    <meta http-equiv="X-UA-Compatible" content="ie=edge"/>
    <title>Document</title>

    <style>
        #myInput {
            width: 400px;
            height: 50px;
            font-size: 40px;
            color: red;
        }

        #contain {
            margin-top: 20px;
            width: 400px;
            height: 200px;
            border: 1px solid salmon;
        }
    </style>
</head>
<body>
<input id="myInput" type="text"/>
<div id="contain"></div>

<script>
    let text;
    window.data = {};
    let oIn = document.getElementById("myInput");
    let oDiv = document.getElementById("contain");

    oIn.addEventListener("input", function (e) {
        text = e.target.value;
        console.log(text);
        window.data.value = text;
    });
    Object.defineProperty(window.data, "value", {
        get() {
            return "";
        },
        set(v) {
            oDiv.innerHTML = v;
        },
    });
</script>
</body>
</html>

